Spark Plug Tester Automotive Engine Ignition Coil Tester 200-9000rpm Adjustable Working Frequency, Three Holes Spark Plug Gap Tool with Protective Cover for All 12V Gasoline Vehicles

Easy Operation Plug and PlayThe operation of this spark tester is very simple. Just put the spark plug to be tested into the test hole, cover the protective cover, and then connect the power supply to start the test. Digital screen displays the working rpm for more precise control.
High-Quality & Widely Used SPT101 Car Spark Plug Tester is used to test the performance and ignition strength of spark plugs. It is made of high-quality thermoplastic polymer structural material (ABS), which has good heat resistance and impact resistance, and can prolong its service life. It can be used to test 12mm diameter 12V gasoline vehicles and is compatible with 99% of the spark plugs of crankshaft engines and motorcycles on the market.
8mm Adjustable HeightThis spark plug tester is specially designed with an 8mm vertical adjustment range, allowing it to easily accommodate spark plugs of different lengths and specifications. Equipped with a built-in intelligent detection and protection system, the device automatically stops testing if the spark plug is not properly inserted or if there is poor contact, preventing high-voltage arcing, electrical short circuits, or device damage caused by loose connections.
Three Years WarrantyFor any quality problems. If SPT301 has any defect, we will provide new replacement or solutions for our customers until satisfaction without delay, and provides lifetime technical support. For any needs, you are warmly welcomed to contact us and we will get back to you ASAP within 24 hours.